Joining studs for 20" wheels
While I was painting a group of 20" rims I noticed that some had the the mushroom heads that I think are "normal" for the 20" rims but two of them had the flat/recessed heads that I associate with 16" rims. I had understood that the 16" rims needed the flat heads for clearance on the brake drums but that the 20" had gone to the mushroom heads for several reasons. Reasons include that it was simpler to form a straight sided hole in the rim than a taper and doesn't rely on matching tapers, easier to weld, stronger due to flat bearing surfaces and full thickness rim stock. Photos of the two styles attached.
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06-02-10, 15:39
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